Indicator	Value
Total population	104,000 peopleUN DESA WPP [2024] 104,200 people·World Bank WDI [2024] 104,200 people
Median age	20.7 yearsUN DESA WPP [2024]
Life expectancy	72.9–73.1 yearsWorld Bank WDI [2024] 73.07 years·UNDP HDI [2023] 72.9 years
Ethnic groups	Tongan 96.5%, other (European, Fijian, Samoan, Indian, Chinese, other Pacific Islander, other Asian, other) 3.5% (2021 est.)CIA World Factbook [2025] · 2026 archive
Languages	Tongan only 85%, Tongan and other language 13.9%, Tongan not used at home 1.1% (2021 est.); note: data represent language use at home of persons aged 5 and olderCIA World Factbook [2025] · 2026 archive
Religions	Protestant 63.9% (Free Wesleyan Church 34.2%, Free Church of Tonga 11.3%, Church of Tonga 6.8%, Seventh Day Adventist 2.5%, Assembly of God 2.5%, Tokaikolo/Maamafo'ou 1.5%, Constitutional Church of Tonga 1.2%, other Protestant 4%), Church of Jesus Christ 19.7%, Roman Catholic 13.7%, other 2.1%, none 0.6%, no answer 0.1% (2021 est.)CIA World Factbook [2025] · 2026 archive
Urbanization	23.2% of total population (2023)CIA World Factbook [2025] · 2026 archive
Population growth	-0.404 %World Bank WDI [2024]
Birth rate	23 per 1,000World Bank WDI [2024]
Death rate	6.44 per 1,000World Bank WDI [2024]
Urban population	21.2 %World Bank WDI [2024]
Languages (structured)	Niuafo'ou / Niuatoputapu / Niuean / Tonga (Tonga Islands)Glottolog [2026]